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Proceedings, 2019, GOSPEL 2019

The 8th GOSPEL Workshop. Gas Sensors Based on Semiconducting Metal Oxides: Basic Understanding & Application Fields

Ferrara, Italy | 20–21 June 2019

Volume Editors:
Vincenzo Guidi, University of Ferrara, Italy
Cesare Malagù, University of Ferrara, Italy
Barbara Fabbri, University of Ferrara, Italy
Matteo Valt, University of Ferrara, Italy

Number of Papers: 55
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Cover Story (view full-size image): GOSPEL is an international biannual research meeting dedicated to R&D activities in the field of semiconducting metal–oxide-based gas sensors. The 8th edition of this Workshop series will [...] Read more.
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2 pages, 345 KiB  
Abstract
Heterogeneous Integration of Metal Oxides—Towards a CMOS Based Multi Gas Sensor Device
by Anton Köck, Marco Deluca, Florentyna Sosada-Ludwikowska, Günther Maier, Robert Wimmer Teubenbacher, Martin Sagmeister, Karl Rohracher, Ewald Wachmann, Jan Steffen Niehaus, Sören Becker, Öznur Tokmak, Hendrik Schlicke, Alexander Blümel, Karl Popovic and Martin Tscherner
Proceedings 2019, 14(1), 5; https://doi.org/10.3390/proceedings2019014005 - 19 Jun 2019
Cited by 1 | Viewed by 1563
Abstract
A worldwide unique CMOS based chemical sensor device comprising an array of 8 microhotplates (µhps) for a total of 16 chemical sensors has been fabricated (Figure 1). [...] Full article
(This article belongs to the Proceedings of The 8th GOSPEL Workshop. Gas Sensors Based on Semiconducting Metal Oxides: Basic Understanding & Application Fields)
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2 pages, 357 KiB  
Abstract
Ultra-Low Power MEMS Gas Sensor Technology and Application
by Yoshinori Nishiue
Proceedings 2019, 14(1), 9; https://doi.org/10.3390/proceedings2019014009 - 19 Jun 2019
Cited by 1 | Viewed by 1279
Abstract
The semiconductor type sensor developed by New Cosmos is a very unique sensor depending on its principle and structure.[...] Full article
(This article belongs to the Proceedings of The 8th GOSPEL Workshop. Gas Sensors Based on Semiconducting Metal Oxides: Basic Understanding & Application Fields)
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1 pages, 113 KiB  
Abstract
Role of Sb and Co Doping in SnO2 Sensing Properties toward Ethanol
by Liupeng Zhao, Tianshuang Wang and Peng Sun
Proceedings 2019, 14(1), 12; https://doi.org/10.3390/proceedings2019014012 - 19 Jun 2019
Viewed by 1042
Abstract
The adsorption and desorption of oxygen molecule on the surface of oxide semiconductors are the basis for sensing reactions between the surface oxygen species and the target gases molecules. Combined with experiments and theoretical calculations, we found that antimony impurities were conducive to [...] Read more.
The adsorption and desorption of oxygen molecule on the surface of oxide semiconductors are the basis for sensing reactions between the surface oxygen species and the target gases molecules. Combined with experiments and theoretical calculations, we found that antimony impurities were conducive to the promotion of oxygen adsorption and dissociation on the surface of SnO2. However, the narrow Debye length had an adverse effect on sensing properties of Sb doped SnO2. On the contrary, the introduction of cobalt dopant will generate more oxygen vacancies and reduce the concentration of electrons and consequently the Debye length will become longer, which makes the transduction more significant. Namely, the same amount of charge transfer between surface and analyte gases can cause a larger change in resistance than pure metal oxide. The aforementioned inferences about doped metal oxides indicate that for optimizing their sensing properties, doped oxides with appropriate dopant and unique structure which can balance the recognition function and transduction function are required. Full article
(This article belongs to the Proceedings of The 8th GOSPEL Workshop. Gas Sensors Based on Semiconducting Metal Oxides: Basic Understanding & Application Fields)
1 pages, 109 KiB  
Abstract
Gas Sensors Based on Oxide Semiconductors with Porous Nanostructures
by Peng Sun
Proceedings 2019, 14(1), 13; https://doi.org/10.3390/proceedings2019014013 - 19 Jun 2019
Viewed by 1065
Abstract
Gas sensor as a device composed of sensing material coupled with signal transducer, has been acknowledged as an analytical tool for detection and quantification of inflammable, explosive or toxic gases. The gas sensors based on nanostructured oxide semiconductor endowed with excellent sensing properties [...] Read more.
Gas sensor as a device composed of sensing material coupled with signal transducer, has been acknowledged as an analytical tool for detection and quantification of inflammable, explosive or toxic gases. The gas sensors based on nanostructured oxide semiconductor endowed with excellent sensing properties have exhibited great potential application in the fields of environmental monitoring, resource exploration, medical welfare, etc. It is well known that the sensing mechanism of sensor employing oxide semiconductors is mainly that the interactions between the surface adsorbed oxygen species and target gases lead to a change in the electrical conductivity. Therefore, the gas sensing properties of oxide semiconductors are closely related with their composition, crystalline size, and microstructure. In this regard, design and preparation of oxides with novel architectures will be increasingly important in the construction of high performance gas sensors. Due to high specific surface area, low density, and good surface permeability, porous nanostructures oxide semiconductor sensing materials have attracted growing interest in recent years. In our work, we successfully prepared various porous nanostructures oxides and their composites to the construction of high performances gas sensors with enhanced sensitivity, selectivity, as well as lowered detection limit. The subsequent gas sensing measurements explicitly revealed that these oxides and composites manifested superior sensing behaviors (like much higher sensitivity and faster response speed), which can be ascribed to the porous architectures and the synergistic effects. Full article
(This article belongs to the Proceedings of The 8th GOSPEL Workshop. Gas Sensors Based on Semiconducting Metal Oxides: Basic Understanding & Application Fields)
2 pages, 1250 KiB  
Abstract
Elaboration and Characterization of SnO2 Doped TiO2 Gas Sensors Deposited through Dip and Spin Coating Methods
by Zineb Essalhi, Soufiane Krik, Bouchaib Hartiti, Andrea Gaiardo, Abderrazak Lfakir, Matteo Valt, Salah Fadili, Barbara Fabbri, Maryam Siadat and Vincenzo Guidi
Proceedings 2019, 14(1), 23; https://doi.org/10.3390/proceedings2019014023 - 19 Jun 2019
Viewed by 1180
Abstract
Semiconductor functional materials play an increasingly important role in science and technology because of their unique optical, electrical, magnetic, catalytic and chemical properties. They are widely used in fields such as solar cell, photo-catalysts, optical coating, capacitors for large scale integrated devices, electrochromic [...] Read more.
Semiconductor functional materials play an increasingly important role in science and technology because of their unique optical, electrical, magnetic, catalytic and chemical properties. They are widely used in fields such as solar cell, photo-catalysts, optical coating, capacitors for large scale integrated devices, electrochromic systems and gas sensors. One important application for semiconductor gas sensors is the detection of pollutant gases for the control of the combustion process. Full article
(This article belongs to the Proceedings of The 8th GOSPEL Workshop. Gas Sensors Based on Semiconducting Metal Oxides: Basic Understanding & Application Fields)
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2 pages, 301 KiB  
Abstract
Self-Heated Graphene Microchannels for Low-Power-Consumption Chemoresistive Sensor Array
by Ho Won Jang and Soo Young Kim
Proceedings 2019, 14(1), 41; https://doi.org/10.3390/proceedings2019014041 - 19 Jun 2019
Viewed by 950
Abstract
The Internet of Everything (IoE) refers to billions of objects having intelligent connections with processed data. Sensors hold the key to the IoE as they detect and assess the internal and external states of objects. [...] Full article
(This article belongs to the Proceedings of The 8th GOSPEL Workshop. Gas Sensors Based on Semiconducting Metal Oxides: Basic Understanding & Application Fields)
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2 pages, 478 KiB  
Abstract
Sub-ppm NO2 Sensing in Temperature Cycled Mode with Ga Doped ZnO Thin Films Deposited by RF Sputtering
by Lionel Presmanes, Vignesh Gunasekaran, Yohann Thimont, Inthuga Sinnarasa, Antoine Barnabe, Philippe Tailhades, Frédéric Blanc, Chabane Talhi and Philippe Menini
Proceedings 2019, 14(1), 48; https://doi.org/10.3390/proceedings2019014048 - 19 Jun 2019
Cited by 1 | Viewed by 1166
Abstract
In this work Ga doped ZnO thin films have been deposited by RF magnetron sputtering onto a silicon micro-hotplate and their structural, microstructural and gas sensing properties have been studied. ZnO:Ga thin film with a thickness of 50 nm has been deposited onto [...] Read more.
In this work Ga doped ZnO thin films have been deposited by RF magnetron sputtering onto a silicon micro-hotplate and their structural, microstructural and gas sensing properties have been studied. ZnO:Ga thin film with a thickness of 50 nm has been deposited onto a silicon based micro-hotplates without any photolithography process thanks to a low cost and reliable stencil mask process. Sub-ppm sensing (500 ppb) of NO2 gas at low temperature (50 °C) has been obtained with promising responses R/R0 up to 18. Full article
(This article belongs to the Proceedings of The 8th GOSPEL Workshop. Gas Sensors Based on Semiconducting Metal Oxides: Basic Understanding & Application Fields)
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3 pages, 606 KiB  
Abstract
A Novel Modular System for Breath Analysis Using Temperature Modulated MOX Sensors
by Carsten Jaeschke, Oriol Gonzalez, Marta Padilla, Kaylen Richardson, Johannes Glöckler, Jan Mitrovics and Boris Mizaikoff
Proceedings 2019, 14(1), 49; https://doi.org/10.3390/proceedings2019014049 - 19 Jun 2019
Cited by 8 | Viewed by 2728
Abstract
In this work, a new generation of gas sensing systems specially designed for breath analysis is presented. The developed system comprises a compact modular, low volume, temperature-controlled sensing chamber with three compartments that can host different sensor types. In the presented system, one [...] Read more.
In this work, a new generation of gas sensing systems specially designed for breath analysis is presented. The developed system comprises a compact modular, low volume, temperature-controlled sensing chamber with three compartments that can host different sensor types. In the presented system, one compartment contains an array of 8 analog MOX sensors and the other two 10 digital MOX sensors each. Here, we test the system for the detection of low concentrations of several compounds. Full article
(This article belongs to the Proceedings of The 8th GOSPEL Workshop. Gas Sensors Based on Semiconducting Metal Oxides: Basic Understanding & Application Fields)
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2 pages, 226 KiB  
Abstract
A Multi-MOx Sensor Approach to Measure Oxidizing and Reducing Gases
by Ehsan Danesh, Richard Dudeney, Jone-Him Tsang, Chris Blackman, James Covington, Peter Smith and John Saffell
Proceedings 2019, 14(1), 50; https://doi.org/10.3390/proceedings2019014050 - 19 Jun 2019
Cited by 5 | Viewed by 1591
Abstract
This report summarizes our recent work on a p-type/n-type Multi-MOx gas sensor platform for simultaneously measuring oxidizing and reducing gases. Full article
(This article belongs to the Proceedings of The 8th GOSPEL Workshop. Gas Sensors Based on Semiconducting Metal Oxides: Basic Understanding & Application Fields)
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3 pages, 285 KiB  
Abstract
Application Runs the Show: What Can We Learn about the Future from the Past?
by Nicolae Barsan
Proceedings 2019, 14(1), 53; https://doi.org/10.3390/proceedings2019014053 - 21 Jun 2019
Viewed by 1184
Abstract
SMOX-based sensors appeared as a response to a very serious safety issue in Japan, namely gas explosion accidents related to leakages of piped and bottled cooking gas. […] Full article
(This article belongs to the Proceedings of The 8th GOSPEL Workshop. Gas Sensors Based on Semiconducting Metal Oxides: Basic Understanding & Application Fields)
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3 pages, 980 KiB  
Proceeding Paper
The Influence of Temperature and Visible Light Activation on the NO2 Response of WO3 Nanofibers Prepared by Electrospinning
by Valentina Paolucci, Seyed Mahmoud Emamjomeh, Umberto Anselmi-Tamburini and Carlo Cantalini
Proceedings 2019, 14(1), 1; https://doi.org/10.3390/proceedings2019014001 - 18 Jun 2019
Cited by 1 | Viewed by 1353
Abstract
Aim of this work is to compare the electrical responses to 100–400 ppb NO2 gas concentrations of WO3 electrospun nanofibers both activated by thermal (in the temperature range 25–100 °C) and/or visible light at different wavelengths (Red λ = 670 nm, [...] Read more.
Aim of this work is to compare the electrical responses to 100–400 ppb NO2 gas concentrations of WO3 electrospun nanofibers both activated by thermal (in the temperature range 25–100 °C) and/or visible light at different wavelengths (Red λ = 670 nm, Green λ = 550 nm, and Purple-Blue λ = 430 nm). WO3 nanofibers were prepared by mixing a W-O sol-gel transparent solution with a polymeric solution made of PVP and DMF, electospun and subsequently annealed at 450 °C. Regarding gas sensing measurements, Purple Blue light resulted the most effective light source as respect to the others. Light illumination at room temperature revealed to improve both base line recovery and response time, whereas temperature enhances relative response, with a maximum at 75 °C. Light-radiating room temperature gas detection yields a satisfactory response notwithstanding a slight reduction of sensor gas sensitivity. Light induced electrical response mechanisms is presented and discussed. Full article
(This article belongs to the Proceedings of The 8th GOSPEL Workshop. Gas Sensors Based on Semiconducting Metal Oxides: Basic Understanding & Application Fields)
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3 pages, 541 KiB  
Extended Abstract
Selective Detection of Hydrogen and Hydrogen Containing Gases with Metal Oxide Gas Sensor Operating in Non-Stationary Thermal Regime
by Alexey Shaposhnik, Pavel Moskalev and Alexey Vasiliev
Proceedings 2019, 14(1), 2; https://doi.org/10.3390/proceedings2019014002 - 18 Jun 2019
Cited by 2 | Viewed by 986
Abstract
The main disadvantage of metal oxide (MOX) gas sensors is their insufficient selectivity leading
to the dominating application for the quantitative analysis of one-component systems with certain
composition, for example, CH4-air or H2-air. [...] Full article
(This article belongs to the Proceedings of The 8th GOSPEL Workshop. Gas Sensors Based on Semiconducting Metal Oxides: Basic Understanding & Application Fields)
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3 pages, 285 KiB  
Extended Abstract
Application of a Micro-Machined Electronic Nose to Detect Escherichia Coli in Human Urine Samples
by Matteo Soprani, Giulia Zambotti, Emanuela Gobbi and Andrea Ponzoni
Proceedings 2019, 14(1), 3; https://doi.org/10.3390/proceedings2019014003 - 18 Jun 2019
Cited by 1 | Viewed by 1212
Abstract
The analysis of volatile organic compounds (VOCs) as disease biomarkers released by the urine [...] Full article
(This article belongs to the Proceedings of The 8th GOSPEL Workshop. Gas Sensors Based on Semiconducting Metal Oxides: Basic Understanding & Application Fields)
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2 pages, 181 KiB  
Extended Abstract
Elaboration and Characterization of SnS Thin Film for Gas Sensors Application
by Youssef Nouri, Bouchaib Hartiti, Abdelkrim Batan, François Reniers, Claudine Buess-Herman, Tiriana Segato, Salah Fadili, Maryam Siadat and Philippe Thévenin
Proceedings 2019, 14(1), 4; https://doi.org/10.3390/proceedings2019014004 - 18 Jun 2019
Cited by 2 | Viewed by 1311
Abstract
The tin sulfide (SnS) has p-type conductivity, high absorption coefficient (≥104 cm−1), […] Full article
(This article belongs to the Proceedings of The 8th GOSPEL Workshop. Gas Sensors Based on Semiconducting Metal Oxides: Basic Understanding & Application Fields)
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3 pages, 339 KiB  
Extended Abstract
How the Gas Flow Affects Conductometric Sensor Performance
by Laura Parellada-Monreal, Alain Martín-Mayor, M. Mounir Bou-Ali and Gemma García Mandayo
Proceedings 2019, 14(1), 6; https://doi.org/10.3390/proceedings2019014006 - 19 Jun 2019
Viewed by 1101
Abstract
The performance of a metal oxide gas sensor can be affected by different parameters as the fabrication process of the sensitive layer or the post-annealing treatment. [...] Full article
(This article belongs to the Proceedings of The 8th GOSPEL Workshop. Gas Sensors Based on Semiconducting Metal Oxides: Basic Understanding & Application Fields)
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2 pages, 758 KiB  
Extended Abstract
Morphological Control of Metal Oxide for Semiconductor-Based Gas Sensor
by Takeshi Hashishin, Jian Sun, Kazuyoshi Sato and Hiroshi Kubota
Proceedings 2019, 14(1), 7; https://doi.org/10.3390/proceedings2019014007 - 19 Jun 2019
Viewed by 1144
Abstract
Morphological control of metal oxide (MO) is important for enhancement of sensing properties such as sensor response and response-recovery characteristics. [...] Full article
(This article belongs to the Proceedings of The 8th GOSPEL Workshop. Gas Sensors Based on Semiconducting Metal Oxides: Basic Understanding & Application Fields)
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3 pages, 633 KiB  
Extended Abstract
Micro Light Plates for Photoactivated Micro-Power Gas Sensors
by Olga Casals, Nicolai Markiewicz, Cristian Fabrega, Isabel Gràcia, Carles Cané, Hutomo Suryo Wasisto, Andreas Waag and J. Daniel Prades
Proceedings 2019, 14(1), 8; https://doi.org/10.3390/proceedings2019014008 - 19 Jun 2019
Viewed by 1246
Abstract
In this contribution we present a highly miniaturized device that integrates a photoactive material with a highly efficient LED light source. This so-called micro light plate configuration (µLP) allows for maximizing the irradiance impinging on the photoactive material, with a minimum power consumption, [...] Read more.
In this contribution we present a highly miniaturized device that integrates a photoactive material with a highly efficient LED light source. This so-called micro light plate configuration (µLP) allows for maximizing the irradiance impinging on the photoactive material, with a minimum power consumption, excellent uniformity and accurate control of the illumination. We demonstrate that, with the µLP approach, very efficient low power gas sensors can be built, and provide a detailed analysis of the rationales behind such improvement, as well as a quantitative model and a set of design rules to implement it in further integrated applications. As a demonstrator, we will describe a NO2 gas sensor operating in the part per billion range (ppb) with microwatt (µW) power consumption. These are the best figures reported to date in conductometric metal-oxides (MOX) sensors operated with light (instead of heat) at room temperature. Full article
(This article belongs to the Proceedings of The 8th GOSPEL Workshop. Gas Sensors Based on Semiconducting Metal Oxides: Basic Understanding & Application Fields)
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3 pages, 499 KiB  
Proceeding Paper
SnO2-Pd as a Gate Material for the Capacitor Type Gas Sensor
by Nikolay Samotaev, Konstantin Oblov, Arthur Litvinov and Maya Etrekova
Proceedings 2019, 14(1), 10; https://doi.org/10.3390/proceedings2019014010 - 19 Jun 2019
Cited by 1 | Viewed by 1197
Abstract
The article describes the result of the use SnO2-Pd thin films as a gate for structure measured ppb range of NO2 gas by the capacitive method. The technological aspects of fabrication SnO2-Pd gate and one comparison by metrological [...] Read more.
The article describes the result of the use SnO2-Pd thin films as a gate for structure measured ppb range of NO2 gas by the capacitive method. The technological aspects of fabrication SnO2-Pd gate and one comparison by metrological parameters with the classical Pd gate field effect sensor are discussed. The use of SnO2-Pd material allows improvement in sensitivity of NO2 by an order of magnitude compare the classical Pd based gate field effect sensors. Full article
(This article belongs to the Proceedings of The 8th GOSPEL Workshop. Gas Sensors Based on Semiconducting Metal Oxides: Basic Understanding & Application Fields)
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2 pages, 483 KiB  
Extended Abstract
Shining Light on Indium Oxide Gas Sensors at Work: A Combined Operando Raman/UV-Vis/FT-IR Spectroscopic Study
by Sebastian Berka, Viktoriya Fleischer and Christian Hess
Proceedings 2019, 14(1), 11; https://doi.org/10.3390/proceedings2019014011 - 19 Jun 2019
Cited by 2 | Viewed by 1185
Abstract
Understanding the mode of operation of metal-oxide gas sensors (e.g., SnO2, In2O3) is of great scientific and economic interest. [...] Full article
(This article belongs to the Proceedings of The 8th GOSPEL Workshop. Gas Sensors Based on Semiconducting Metal Oxides: Basic Understanding & Application Fields)
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2 pages, 324 KiB  
Extended Abstract
Influence of Oxygen Vacancies in Gas Sensors Based on Tin Dioxide Nanostructure: A First Principles Study
by Soufiane Krik, Andrea Gaiardo, Matteo Valt, Barbara Fabbri, Cesare Malagù, Pierluigi Bellutti and Vincenzo Guidi
Proceedings 2019, 14(1), 14; https://doi.org/10.3390/proceedings2019014014 - 19 Jun 2019
Viewed by 1200
Abstract
The use of computer simulations for performance predictions has become almost essential.[...] Full article
(This article belongs to the Proceedings of The 8th GOSPEL Workshop. Gas Sensors Based on Semiconducting Metal Oxides: Basic Understanding & Application Fields)
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3 pages, 1890 KiB  
Extended Abstract
Realizing the Control of Fermi Level and Gas-Sensing Selectivity over Gallium-Doped In2O3 Inverse Opal Microspheres
by Tianshuang Wang, Peng Sun and Geyu Lu
Proceedings 2019, 14(1), 15; https://doi.org/10.3390/proceedings2019014015 - 19 Jun 2019
Viewed by 1008
Abstract
Herein, formaldehyde sensors based on gallium-doped In2O3 inverse opal [...] Full article
(This article belongs to the Proceedings of The 8th GOSPEL Workshop. Gas Sensors Based on Semiconducting Metal Oxides: Basic Understanding & Application Fields)
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2 pages, 549 KiB  
Extended Abstract
SACMI Electronic Olfactory System Based on Semiconducting Metal Oxides
by Marco Marzocchi and Oliviero Ossani
Proceedings 2019, 14(1), 16; https://doi.org/10.3390/proceedings2019014016 - 19 Jun 2019
Viewed by 1018
Abstract
Electronic Olfactory Systems, also called Electronic Noses, are instruments designed to mimic the sense of smell. […] Full article
(This article belongs to the Proceedings of The 8th GOSPEL Workshop. Gas Sensors Based on Semiconducting Metal Oxides: Basic Understanding & Application Fields)
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4 pages, 336 KiB  
Proceeding Paper
Rare-Earth Based Chemoresistive CO2 Sensors and Their Operando Investigations
by Takuya Suzuki, Andre Sackmann, Alexandru Oprea, Udo Weimar and Nicolae Barsan
Proceedings 2019, 14(1), 17; https://doi.org/10.3390/proceedings2019014017 - 19 Jun 2019
Cited by 2 | Viewed by 1433
Abstract
Rare-earth oxycarbonates have been proposed as promising chemoresistive materials for CO2 sensors. In this contribution we present the results of a broad investigation focused on selecting the best candidates in the rare-earth compounds and, in the case of the best performing material, [...] Read more.
Rare-earth oxycarbonates have been proposed as promising chemoresistive materials for CO2 sensors. In this contribution we present the results of a broad investigation focused on selecting the best candidates in the rare-earth compounds and, in the case of the best performing material, preliminary results dealing with the understanding of sensing by the operando methods. Full article
(This article belongs to the Proceedings of The 8th GOSPEL Workshop. Gas Sensors Based on Semiconducting Metal Oxides: Basic Understanding & Application Fields)
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3 pages, 362 KiB  
Proceeding Paper
Consideration for Oxygen Adsorption Species on SnO2 Semiconductor Gas Sensors
by Kengo Shimanoe, Takaharu Mizukami, Koichi Suematsu and Ken Watanabe
Proceedings 2019, 14(1), 18; https://doi.org/10.3390/proceedings2019014018 - 19 Jun 2019
Viewed by 1167
Abstract
Water vapor is the most important factor to influence on gas sensing properties. […] Full article
(This article belongs to the Proceedings of The 8th GOSPEL Workshop. Gas Sensors Based on Semiconducting Metal Oxides: Basic Understanding & Application Fields)
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2 pages, 171 KiB  
Extended Abstract
Optical Gas Sensors Based on Localised Surface Plasmon Resonance
by Michele Rigon, Enrico Della Gaspera and Alessandro Martucci
Proceedings 2019, 14(1), 19; https://doi.org/10.3390/proceedings2019014019 - 19 Jun 2019
Cited by 2 | Viewed by 1340
Abstract
Gas species recognition through fully optical devices is currently a raising trend over the wellestablished
conductometric approach [...] Full article
(This article belongs to the Proceedings of The 8th GOSPEL Workshop. Gas Sensors Based on Semiconducting Metal Oxides: Basic Understanding & Application Fields)
3 pages, 516 KiB  
Proceeding Paper
Testing the Reliability of Flexible MOX Gas Sensors under Strain
by M. Alvarado, A. Romero, J.L. Ramírez, S. De la Flor and E. Llobet
Proceedings 2019, 14(1), 20; https://doi.org/10.3390/proceedings2019014020 - 19 Jun 2019
Cited by 1 | Viewed by 1222
Abstract
We present flexible chemo-resistive sensors based on AACVD grown tungsten trioxide (WO3) nanowires. The sensor response to gases, before and after a 50-cycle bending test, is reported. Thus, proving that reliable gas sensors, able to withstand repeated bending, have been achieved. [...] Read more.
We present flexible chemo-resistive sensors based on AACVD grown tungsten trioxide (WO3) nanowires. The sensor response to gases, before and after a 50-cycle bending test, is reported. Thus, proving that reliable gas sensors, able to withstand repeated bending, have been achieved. Moreover, their integrity and durability have been tested under harsh bending conditions until break down. Full article
(This article belongs to the Proceedings of The 8th GOSPEL Workshop. Gas Sensors Based on Semiconducting Metal Oxides: Basic Understanding & Application Fields)
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2 pages, 695 KiB  
Extended Abstract
Selective Gas Sensor Based on Metal Oxide Nanostructure
by Vardan Galstyan, Nicola Poli and Elisabetta Comini
Proceedings 2019, 14(1), 21; https://doi.org/10.3390/proceedings2019014021 - 19 Jun 2019
Cited by 1 | Viewed by 1056
Abstract
Hydrogen sulfide (H2S) is a colorless, highly flammable and toxic gas. It is produced due to
industrial activities including petroleum refineries [...] Full article
(This article belongs to the Proceedings of The 8th GOSPEL Workshop. Gas Sensors Based on Semiconducting Metal Oxides: Basic Understanding & Application Fields)
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2 pages, 615 KiB  
Extended Abstract
Comparative Analysis between Blood Test and Breath Analysis Using Sensors Array for Diabetic Patients
by Hyung-Gi Byun, Joon-Boo Yu, Chong-Yun Kang, Byoung Kuk Jang and Hae-Ryong Lee
Proceedings 2019, 14(1), 22; https://doi.org/10.3390/proceedings2019014022 - 19 Jun 2019
Cited by 3 | Viewed by 1145
Abstract
Acetone was one of the volatile organic compounds present in respiration, and acetone contained in the exhalation of diabetic patients was found to be a combustion metabolite of body fat. [...] Full article
(This article belongs to the Proceedings of The 8th GOSPEL Workshop. Gas Sensors Based on Semiconducting Metal Oxides: Basic Understanding & Application Fields)
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3 pages, 853 KiB  
Extended Abstract
Ultra-High Sensitive (Ppt) Gas Sensor Based on the Pulse Heating Using MEMS Technique
by Koichi Suematsu, Wataru Harano, Yuki Hiroyama, Ken Watanabe and Kengo Shimanoe
Proceedings 2019, 14(1), 24; https://doi.org/10.3390/proceedings2019014024 - 19 Jun 2019
Viewed by 1329
Abstract
High sensitivity and low limit of detection to volatile organic compounds (VOCs) gases are typical properties on the resistive-type semiconductor gas sensors using SnO2-based materials. […] Full article
(This article belongs to the Proceedings of The 8th GOSPEL Workshop. Gas Sensors Based on Semiconducting Metal Oxides: Basic Understanding & Application Fields)
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3 pages, 877 KiB  
Extended Abstract
Surface Properties of SnO2 Nanolayers Deposited by Rheotaxial Growth and Vacuum Oxidation for Potential Gas Sensor Applications
by Barbara Lyson-Sypien, Monika Kwoka and Maciej Krzywiecki
Proceedings 2019, 14(1), 25; https://doi.org/10.3390/proceedings2019014025 - 19 Jun 2019
Viewed by 951
Abstract
Within this work the advantages of Rheotaxial Growth and Vacuum Oxidation i.e. maximal
extension of internal surfaces, small degree of nanograins [...] Full article
(This article belongs to the Proceedings of The 8th GOSPEL Workshop. Gas Sensors Based on Semiconducting Metal Oxides: Basic Understanding & Application Fields)
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3 pages, 703 KiB  
Extended Abstract
H2S Sensing Properties of a Diode-Type Device Using ZnO Nanorods Coupled with CuO Nanocrystals
by Tetsuya Kida, Yuta Kido and Takeshi Shinkai
Proceedings 2019, 14(1), 26; https://doi.org/10.3390/proceedings2019014026 - 19 Jun 2019
Cited by 1 | Viewed by 987
Abstract
Hydrogen sulfide (H2S) is known as a colorless, flammable and highly toxic gas with strong odor. […] Full article
(This article belongs to the Proceedings of The 8th GOSPEL Workshop. Gas Sensors Based on Semiconducting Metal Oxides: Basic Understanding & Application Fields)
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3 pages, 919 KiB  
Extended Abstract
Monitoring Surface Stoichiometry, Work Function and Valance Band of Tungsten Oxide (WO3), Molybdenum Oxide (MoO3) and Tin Oxide (SnO2) Thin Films as a Function of Temperature and Oxygen Partial Pressure with Advanced Surface Sensitive Techniques for Chemical Sensing Applications
by Engin Ciftyurek, Martin Wilken, David Zanders, Lukas Mai, Anjana Devi and Klaus D. Schierbaum
Proceedings 2019, 14(1), 27; https://doi.org/10.3390/proceedings2019014027 - 19 Jun 2019
Cited by 2 | Viewed by 1638
Abstract
Atomic layer deposition (ALD) is a chemical vapor deposition (CVD) deposition method in
which high-quality [...] Full article
(This article belongs to the Proceedings of The 8th GOSPEL Workshop. Gas Sensors Based on Semiconducting Metal Oxides: Basic Understanding & Application Fields)
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3 pages, 385 KiB  
Extended Abstract
Gas Sensing with Porphyrin Functionalized Metal Oxide Nanostructures
by Gabriele Magna, Mounika Muduganti, Roberto Paolesse and Corrado Di Natale
Proceedings 2019, 14(1), 28; https://doi.org/10.3390/proceedings2019014028 - 19 Jun 2019
Viewed by 1290
Abstract
In the last years we have been interested to study the interplay of light and gas sensitivity in hybrid materials formed by porphyrins grafted onto ZnO nanostructures. [...] Full article
(This article belongs to the Proceedings of The 8th GOSPEL Workshop. Gas Sensors Based on Semiconducting Metal Oxides: Basic Understanding & Application Fields)
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3 pages, 312 KiB  
Extended Abstract
Chemoresistive Nanostructured Sensors for Tumor Pre-Screening
by Michele Astolfi, Giulia Zonta, Nicolò Landini, Sandro Gherardi, Giorgio Rispoli, Gabriele Anania, Mascia Benedusi, Vincenzo Guidi, Caterina Palmonari, Paola Secchiero, Veronica Tisato, Matteo Valt and Cesare Malagù
Proceedings 2019, 14(1), 29; https://doi.org/10.3390/proceedings2019014029 - 19 Jun 2019
Cited by 3 | Viewed by 1162
Abstract
One of the greatest goals in medicine is early-stage detection of tumors, to allow physicians and surgeons to apply the available therapies, which are usually successful on small volume cancers only. [...] Full article
(This article belongs to the Proceedings of The 8th GOSPEL Workshop. Gas Sensors Based on Semiconducting Metal Oxides: Basic Understanding & Application Fields)
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3 pages, 1008 KiB  
Proceeding Paper
Towards the Miniaturization of Electronic Nose as Personal Measurement Systems
by Jesús Lozano, Félix Meléndez, Patricia Arroyo, José Ignacio Suárez, José Luis Herrero, Pablo Carmona and Juan Álvaro Fernández
Proceedings 2019, 14(1), 30; https://doi.org/10.3390/proceedings2019014030 - 19 Jun 2019
Cited by 4 | Viewed by 1261
Abstract
This study addresses the development of a miniaturized wireless sensing module (electronic nose) for a personal use in air quality detection. [...] Full article
(This article belongs to the Proceedings of The 8th GOSPEL Workshop. Gas Sensors Based on Semiconducting Metal Oxides: Basic Understanding & Application Fields)
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2 pages, 135 KiB  
Extended Abstract
Metal Oxide Sensors Applied to Industrial and Consumer Applications: Examples and Requirements for Successful Implementation
by Debra J. Deininger
Proceedings 2019, 14(1), 31; https://doi.org/10.3390/proceedings2019014031 - 19 Jun 2019
Cited by 1 | Viewed by 897
Abstract
Metal Oxide (MOx) sensors have been the subject of intense research and development over the
years, and are widely used in industrial and commercial sensing applications [...] Full article
(This article belongs to the Proceedings of The 8th GOSPEL Workshop. Gas Sensors Based on Semiconducting Metal Oxides: Basic Understanding & Application Fields)
2 pages, 274 KiB  
Extended Abstract
SnO2-Based Gas Sensor for Detection of Refrigerant Gases
by Kuniyuki Izawa
Proceedings 2019, 14(1), 32; https://doi.org/10.3390/proceedings2019014032 - 19 Jun 2019
Cited by 2 | Viewed by 1128
Abstract
The Montreal Protocol on Substances that Deplete the Ozone Layer entered into force in 1989. […] Full article
(This article belongs to the Proceedings of The 8th GOSPEL Workshop. Gas Sensors Based on Semiconducting Metal Oxides: Basic Understanding & Application Fields)
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3 pages, 249 KiB  
Proceeding Paper
Identification of Poisonous Mushrooms by Means of a Hand-Held Electronic Nose
by Francisco Portalo-Calero, Jesús Lozano, Félix Meléndez, Patricia Arroyo and José Ignacio Suárez
Proceedings 2019, 14(1), 33; https://doi.org/10.3390/proceedings2019014033 - 19 Jun 2019
Cited by 6 | Viewed by 1351
Abstract
This work presents a practical application of an electronic nose to fast and efficient discrimination of different species of Amanita mushrooms. The electronic nose instrument were utilized for investigation of discrimination capability with respect to odour profile of these fungi. The home-made prototype [...] Read more.
This work presents a practical application of an electronic nose to fast and efficient discrimination of different species of Amanita mushrooms. The electronic nose instrument were utilized for investigation of discrimination capability with respect to odour profile of these fungi. The home-made prototype was based on MOS-type chemical sensors and headspace sampling method. Samples were cut into thin sheets, placed in glass vials and maintained at a constant temperature using a thermostatic bath, the headspace of which was subjected to analysis. The data were analysed using multivariate methods: PCA, LDA and Artificial Neural Networks. The obtained results confirmed legitimacy of application of the electronic nose technique to identification and discrimination of fungi species. Results show a correct classification of the fungi species at the level of 80–100%. Full article
(This article belongs to the Proceedings of The 8th GOSPEL Workshop. Gas Sensors Based on Semiconducting Metal Oxides: Basic Understanding & Application Fields)
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3 pages, 620 KiB  
Extended Abstract
Nanostructured Chemoresistive Sensors for Oncological Screening: Preliminary Study with Single Sensor Approach on Human Blood Samples
by N. Landini, G. Anania, M. Astolfi, B. Fabbri, A. Gaiardo, S. Gherardi, A. Giberti, V. Guidi, G. Rispoli, L. Scagliarini, M. Valt, G. Zonta and C. Malagù
Proceedings 2019, 14(1), 34; https://doi.org/10.3390/proceedings2019014034 - 19 Jun 2019
Cited by 2 | Viewed by 1158
Abstract
The demand for reliable devices to detect tumor biomarkers in human body is constantly
increasing [...] Full article
(This article belongs to the Proceedings of The 8th GOSPEL Workshop. Gas Sensors Based on Semiconducting Metal Oxides: Basic Understanding & Application Fields)
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2 pages, 185 KiB  
Proceeding Paper
Semiconductor Gas Sensors to Analyze Fecal Exhalation as a Method for Colorectal Cancer Screening
by G. Zonta, M. Astolfi, A. Gaiardo, S. Gherardi, A. Giberti, V. Guidi, N. Landini and C. Malagù
Proceedings 2019, 14(1), 35; https://doi.org/10.3390/proceedings2019014035 - 19 Jun 2019
Cited by 3 | Viewed by 1136
Abstract
Colorectal cancer (CRC) preventive screening is fundamental to identify tumors before their possible degeneration. [...] Full article
(This article belongs to the Proceedings of The 8th GOSPEL Workshop. Gas Sensors Based on Semiconducting Metal Oxides: Basic Understanding & Application Fields)
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3 pages, 405 KiB  
Extended Abstract
High Temperature Resistive Gas Sensors Based on ZnO/SiC Nanocomposites
by Vadim Platonov, Marina Rumyantseva and Alexander Gaskov
Proceedings 2019, 14(1), 36; https://doi.org/10.3390/proceedings2019014036 - 19 Jun 2019
Cited by 2 | Viewed by 1129
Abstract
The work is aimed at creating ZnO/SiC composites for resistive type gas sensors towards main
components of exhaust gases [...] Full article
(This article belongs to the Proceedings of The 8th GOSPEL Workshop. Gas Sensors Based on Semiconducting Metal Oxides: Basic Understanding & Application Fields)
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3 pages, 1326 KiB  
Extended Abstract
Light—Assisted Low Temperature Formaldehyde Detection at Sub-ppm Level Using Metal Oxide Semiconductor Gas Sensors
by Marina Rumyantseva, Abulkosim Nasriddinov, Valeriy Krivetskiy and Alexander Gaskov
Proceedings 2019, 14(1), 37; https://doi.org/10.3390/proceedings2019014037 - 19 Jun 2019
Cited by 2 | Viewed by 1098
Abstract
Formaldehyde HCOH is a toxic compound that, in trace concentrations, causes serious diseases
of the respiratory tract, gastrointestinal tract and eyes [...] Full article
(This article belongs to the Proceedings of The 8th GOSPEL Workshop. Gas Sensors Based on Semiconducting Metal Oxides: Basic Understanding & Application Fields)
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2 pages, 200 KiB  
Extended Abstract
MOX Sensors to Ensure Suitable Parameters of Grated Parmigiano Reggiano Cheese
by Marco Abbatangelo, Giorgio Duina, Elisabetta Comini and Giorgio Sberveglieri
Proceedings 2019, 14(1), 38; https://doi.org/10.3390/proceedings2019014038 - 19 Jun 2019
Cited by 2 | Viewed by 1118
Abstract
Parmigiano Reggiano (PR) cheese is a long-ripened hard cheese made in Northern Italy registered as a Protected Designation of Origin (PDO) in the European Union. [...] Full article
(This article belongs to the Proceedings of The 8th GOSPEL Workshop. Gas Sensors Based on Semiconducting Metal Oxides: Basic Understanding & Application Fields)
1 pages, 161 KiB  
Extended Abstract
Sensing Performance of Al and Sn Doped ZnO for Hydrogen Detection
by Zahira. El khalidi, Maryam Siadat, Elisabetta. Comini, Salah. Fadili and Philippe. Thevenin
Proceedings 2019, 14(1), 39; https://doi.org/10.3390/proceedings2019014039 - 19 Jun 2019
Viewed by 1351
Abstract
Chemical gas sensors were studied long ago and nowadays, for the advantageous role they provide to the environment, health condition monitoring and protection. The recent studies focus on the semiconductors sensing abilities, especially of non toxic and low cost compounds. The present work [...] Read more.
Chemical gas sensors were studied long ago and nowadays, for the advantageous role they provide to the environment, health condition monitoring and protection. The recent studies focus on the semiconductors sensing abilities, especially of non toxic and low cost compounds. The present work describes the steps to elaborate and perform a chemical sensor using intrinsic and doped semiconductor zinc oxide. First, we synthesized pure oxide using zinc powder, then, two other samples were established where we introduced the same doping percentage of Al and Sn respectively. Using low cost spray pyrolysis, and respecting the same conditions of preparation. The obtained samples were then characterized by X Ray Diffraction (XRD) that revealed the hexagonal wurzite structure and higher crystallite density towards the direction (002), besides the appearance of the vibration modes related to zinc oxide, confirmed by Raman spectroscopy. SEM spectroscopy showed that the surface morphology is ideal for oxidizing/reduction reactions, due to the porous structure and the low grain sizes, especially observed for the sample Sn doped ZnO. The gas testing confirms these predictions showing that the highest response is related to Sn doped ZnO compared to ZnO and followed by Al doped ZnO. The films exhibited responses towards: CO, acetone, methanol, H2, ammonia and NO2. The concentrations were varied from 10 to 500 ppm and the working temperatures from 250 to 500°C, the optimal working temperatures were 350 and 400 °C. Sn doped ZnO showed a high response towards H2 gas target, with a sensitivity reaching 200 at 500 ppm, for 400 °C. Full article
(This article belongs to the Proceedings of The 8th GOSPEL Workshop. Gas Sensors Based on Semiconducting Metal Oxides: Basic Understanding & Application Fields)
3 pages, 629 KiB  
Extended Abstract
Flexible Gas Sensor Printed on Polymer Substrate for Acetone Detection in Portable Exhaled Breath Analyzers
by W. Andrysiewicz, J. Krzeminski, K. Marszalek, M. Sloma and A. Rydosz
Proceedings 2019, 14(1), 40; https://doi.org/10.3390/proceedings2019014040 - 19 Jun 2019
Cited by 1 | Viewed by 1169
Abstract
Gas detectors have constantly been developed over the few last decades as a result of
industrial demands: for monitoring air quality [...] Full article
(This article belongs to the Proceedings of The 8th GOSPEL Workshop. Gas Sensors Based on Semiconducting Metal Oxides: Basic Understanding & Application Fields)
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2 pages, 161 KiB  
Proceeding Paper
ZnO Nanostructures for Gas Sensing Applications: From Tetrapods-Based Chemoresistive Devices to Carbon Fiber Integration
by Davide Calestani
Proceedings 2019, 14(1), 42; https://doi.org/10.3390/proceedings2019014042 - 19 Jun 2019
Cited by 1 | Viewed by 1114
Abstract
Zinc oxide (ZnO) nanostructures can be grown in different morphologies by means of a wide range of techniques. […] Full article
(This article belongs to the Proceedings of The 8th GOSPEL Workshop. Gas Sensors Based on Semiconducting Metal Oxides: Basic Understanding & Application Fields)
3 pages, 452 KiB  
Proceeding Paper
Chemically Sensitive Photoluminescence of InGaN/GaN Nanowire Heterostructure Arrays
by Konrad Maier, Andreas Helwig, Gerhard Müller and Martin Eickhoff
Proceedings 2019, 14(1), 43; https://doi.org/10.3390/proceedings2019014043 - 19 Jun 2019
Viewed by 2093
Abstract
III-nitride semiconductors (AlGaN, GaN and InGaN) have received considerable attention in various fields ranging from high-frequency and high-temperature electronics [1] to LED lighting technologies [2]. [...] Full article
(This article belongs to the Proceedings of The 8th GOSPEL Workshop. Gas Sensors Based on Semiconducting Metal Oxides: Basic Understanding & Application Fields)
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3 pages, 330 KiB  
Extended Abstract
Nanocrystalline LaCoO3 Modified by Ag Nanoparticles with Improved Sensitivity to H2S
by Artem Marikutsa, Valentina Chumakova, Marina Rumyantseva and Alexander Gaskov
Proceedings 2019, 14(1), 44; https://doi.org/10.3390/proceedings2019014044 - 19 Jun 2019
Viewed by 1051
Abstract
Nanocrystalline LaCoO3 was synthesized by sol-gel method and functionalized by Ag
nanoparticles via impregnation [...] Full article
(This article belongs to the Proceedings of The 8th GOSPEL Workshop. Gas Sensors Based on Semiconducting Metal Oxides: Basic Understanding & Application Fields)
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3 pages, 268 KiB  
Extended Abstract
Investigation of the Film Thickness Influence on the Sensor Response of In2O3-Based Sensors for O3 Detection at Low Temperature and Operando DRIFT Study
by Daniele Ziegler, Paola Palmero, Jean-Marc Tulliani, Anna Staerz, Alexandru Oprea, Udo Weimar and Nicolae Barsan
Proceedings 2019, 14(1), 45; https://doi.org/10.3390/proceedings2019014045 - 19 Jun 2019
Cited by 2 | Viewed by 1169
Abstract
Industrial pollution and traffic emissions emit dangerous amounts of O3, NO2, VOCs and PM into environment, bringing higher incidence of morbidity and mortality in respiratory sicknesses [1]. [...] Full article
(This article belongs to the Proceedings of The 8th GOSPEL Workshop. Gas Sensors Based on Semiconducting Metal Oxides: Basic Understanding & Application Fields)
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3 pages, 525 KiB  
Proceeding Paper
Synergistic Effect of Nanocrystalline SnO2 Sensitization by Bimetallic Au and Pd Modification via Ingle Step Flame Spray Pyrolysis Technique
by Valeriy Krivetskiy, Konstantin Zamanskiy and Alina Krotova
Proceedings 2019, 14(1), 46; https://doi.org/10.3390/proceedings2019014046 - 19 Jun 2019
Viewed by 1332
Abstract
Convenient and scalable single step flame spray pyrolysis (FSP) synthesis of bimetal AuPd sensitized nanocrystalline SnO2 for gas sensor application is reported. The materials chemical composition, structure and morphology has been studied by XRD, XPS, HAADFSTEM, BET, ICP-MS techniques as well as [...] Read more.
Convenient and scalable single step flame spray pyrolysis (FSP) synthesis of bimetal AuPd sensitized nanocrystalline SnO2 for gas sensor application is reported. The materials chemical composition, structure and morphology has been studied by XRD, XPS, HAADFSTEM, BET, ICP-MS techniques as well as thermo-programmed reduction with hydrogen (TPR-H2). Superior gas sensor response of bimetal modified SnO2 towards wide concentration range of reducing (CO, CH4, C3H8, H2S, NH3) and oxidizing (NO2) gases compared to pure and monometallic modified SnO2 is reported. The observed enhanced gas sensor performance is concluded to arise from combination of facilitated oxygen molecule spillover on gold particles and electronic effect of Fermi level control by reoxidizing Pd-PdO clusters, homogeneously distributed over SnO2 particles surface. Full article
(This article belongs to the Proceedings of The 8th GOSPEL Workshop. Gas Sensors Based on Semiconducting Metal Oxides: Basic Understanding & Application Fields)
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3 pages, 802 KiB  
Proceeding Paper
Selective Detection of Hydrocarbons in Real Atmospheric Conditions by Single MOX Sensor in Temperature Modulation Mode
by Valeriy Krivetskiy, Matvey Andreev and Alexander Efitorov
Proceedings 2019, 14(1), 47; https://doi.org/10.3390/proceedings2019014047 - 19 Jun 2019
Cited by 1 | Viewed by 1358
Abstract
Selective detection of hydrocarbons – methane and propane – in urban air for industrial safety properties by single metal oxide semiconductor gas sensor has been demonstrated. As sensors were fabricated on the basis of nanocrystalline SnO2 and alumina micro-hotplates. Sensor working temperature [...] Read more.
Selective detection of hydrocarbons – methane and propane – in urban air for industrial safety properties by single metal oxide semiconductor gas sensor has been demonstrated. As sensors were fabricated on the basis of nanocrystalline SnO2 and alumina micro-hotplates. Sensor working temperature modulation has been applied during raw sensor data collection. Pre-processing of acquired data – scaling, baseline extraction and exclusion of non-valid data points has been demonstrated to be critical procedures before application of machine learning algorithms. The achieved accuracy of 86% for correct gas identification in 40-200 ppm range has been demonstrated. Full article
(This article belongs to the Proceedings of The 8th GOSPEL Workshop. Gas Sensors Based on Semiconducting Metal Oxides: Basic Understanding & Application Fields)
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3 pages, 565 KiB  
Extended Abstract
Gas Sensing Mechanism Investigation of LaFeO3 Perovskite-Type Oxides via Operando Technique
by A. A. Alharbi, Udo Weimar and Nicolae Bârsan
Proceedings 2019, 14(1), 51; https://doi.org/10.3390/proceedings2019014051 - 19 Jun 2019
Viewed by 1231
Abstract
Gas sensor based on perovskites, such as LaFeO3 (LFO), have been used successfully to detect various target gases [1,2]. […] Full article
(This article belongs to the Proceedings of The 8th GOSPEL Workshop. Gas Sensors Based on Semiconducting Metal Oxides: Basic Understanding & Application Fields)
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3 pages, 1155 KiB  
Proceeding Paper
Rapid Prototyping of MOX Gas Sensors in Form-Factor of SMD Packages
by Nikolay Samotaev
Proceedings 2019, 14(1), 52; https://doi.org/10.3390/proceedings2019014052 - 19 Jun 2019
Cited by 2 | Viewed by 1144
Abstract
By laser micromilling technology it is possible to fabricate custom MEMS microhotplate platform and also SMD package for MOX sensor, that gives complete solution for integration in mobile devices-smart phones, tablets and etc. The 3D design and fabrication of MEMS microhotplates and packages [...] Read more.
By laser micromilling technology it is possible to fabricate custom MEMS microhotplate platform and also SMD package for MOX sensor, that gives complete solution for integration in mobile devices-smart phones, tablets and etc. The 3D design and fabrication of MEMS microhotplates and packages products occurs simultaneously that give opportunity for ultra-fast time making unique solutions for MOX sensors (number of microhotplates, hot spot size on microhotplates, diameter holes in package cap and etc.) without looking at standard solutions (primarily the package type). Full article
(This article belongs to the Proceedings of The 8th GOSPEL Workshop. Gas Sensors Based on Semiconducting Metal Oxides: Basic Understanding & Application Fields)
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3 pages, 478 KiB  
Extended Abstract
Work Function Measurements in Single-Crystalline In2O3 for Conduction Modelling
by Federico Schipani, Alexandru Oprea, Udo Weimar, Alexandra Papadogianni and Oliver Bierwagen
Proceedings 2019, 14(1), 54; https://doi.org/10.3390/proceedings2019014054 - 23 Jun 2019
Viewed by 1252
Abstract
To date, there are only a few studies on the gas sensing properties of single crystalline sensors. […] Full article
(This article belongs to the Proceedings of The 8th GOSPEL Workshop. Gas Sensors Based on Semiconducting Metal Oxides: Basic Understanding & Application Fields)
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2 pages, 322 KiB  
Proceeding Paper
Elaboration and Characterization of CuO Thin Films by Spray Pyrolysis Method for Gas Sensors Applications
by Maha Hinna, Bouchaib Hartiti, Abdelkrim Batan, François Reniers, Claudine Buess-Herman, Tiriana Segato, Naoual Belouaggadia, Salah Fadili, Maryam Siadat and Philippe Thévenin
Proceedings 2019, 14(1), 55; https://doi.org/10.3390/proceedings2019014055 - 28 Jun 2019
Cited by 2 | Viewed by 1585
Abstract
Abstract: Metal oxide semiconductor gas sensors are used in a various applications in environmental, industrial and medical field, for instance. They are relatively inexpensive compared to other sensing technologies, robust, lightweight, long lasting and benefit from high material sensitivity and quick response [...] Read more.
Abstract: Metal oxide semiconductor gas sensors are used in a various applications in environmental, industrial and medical field, for instance. They are relatively inexpensive compared to other sensing technologies, robust, lightweight, long lasting and benefit from high material sensitivity and quick response times. Copper oxide (CuO) thin film has been promisingly proposed for chemical sensing applications. Particularly, it has been recommended as a sensitive layer for monitoring harmful and combustible gases. It is an attractive material because of nontoxic, inexpensive, abundance advantages, and its fabrication is easy. In this work, we have synthesized CuO thin films by Spray pyrolysis method. The effect of the temperature deposition is investigated:to say 350 °C, 400 °C, and 450 °C while the deposition duration was kipped to 15 min. The samples were analyzed by X-ray diffraction, Raman spectroscopy, XPS analysis, UV-visible transmission and four points probe method. Full article
(This article belongs to the Proceedings of The 8th GOSPEL Workshop. Gas Sensors Based on Semiconducting Metal Oxides: Basic Understanding & Application Fields)
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